Carbon Steel Pipe
Carbon Steel Pipe
API 5CT Steel Pipe
API is an acronym for the American Petroleum Institute and is considered the most authoritative and comprehensive principle in the oil and gas industry. API 5B and API 5CT are mainly used for oil casing. API 5CT oil casing can be divided into seamless steel pipe and welded steel pipe.
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API 5CT Steel Pipe Description
API 5CT is a standard technical specification of steel pipes for casing and tubing in oil or gas industries. It can be used in oil or gas drilling and conveying. Commonly used oilfield API-5CT casing steel grades are J55, K55, N80-1, N80Q, P110. Casings are mostly used in oil well drilling. According to the API-5CT standard, pipes can be divided into STC (short thread), LTC (long thread) and BTC (support thread) and their joints.
Product Parameters
Product Name | API 5CT Steel Pipe | |
Standard | EN/DIN/JIS/ASTM/BS/ASME/AISI etc. | |
Outer Diameter | Seamless: 1/4"-36" | Welding: 21.3mm-3620mm |
Round Tube: 1/2"-10" | Square Tube/Rectangular Tube: 15x15mm-400x600mm | |
Wall Thickness | Seamless: 1.25mm-50mm | Welding: 1.65mm-65mm |
Length | 3-12 meters, Support customization | |
Surface Process | Bright, Polished, Black | |
Other Services | Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc. | |
Chemical Composition
Grade | C ≤ | Si ≤ | Mn ≤ | P ≤ | S ≤ | Cr ≤ | Ni ≤ | With | V ≤ | Als ≤ |
API 5CT J55 | 0.34-0.39 | 0.20-0.35 | 1.25-1.50 | 0.020 | 0.015 | 0.15 | 0.20 | 0.20 | / | 0.020 |
API 5CT K55 | 0.34-0.39 | 0.20-0.35 | 1.25-1.50 | 0.020 | 0.015 | 0.15 | 0.20 | 0.20 | / | 0.020 |
API 5CT N80 | 0.34-0.38 | 0.20-0.35 | 1.45-1.70 | 0.020 | 0.015 | 0.15 | / | / | 0.11-0.16 | 0.020 |
API 5CT L80 | 0.15-0.22 | 1.00 | 0.25-1.00 | 0.020 | 0.010 | 12.0-14.0 | 0.20 | 0.20 | / | 0.020 |
API 5CT J P110 | 0.26-035 | 0.17-0.37 | 0.40-0.70 | 0.020 | 0.010 | 0.80-1.10 | 0.20 | 0.20 | 0.08 | 0.020 |
Mechanical Properties
Grade | Yield Strength (Mpa) | Tensile Strength (Mpa) |
API 5CT J55 | 379-552 | ≥ 517 |
API 5CT K55 | ≥ 655 | ≥ 517 |
API 5CT N80 | 552-758 | ≥ 689 |
API 5CT L80 | 552-655 | ≥ 655 |
API 5CT P110 | 758-965 | ≥ 862 |
Scope of Application
API 5CT oil casing is mainly used to transport oil, natural gas, coal gas, water and other liquids, gases.
What is your working time?
In general, our online service time is Beijing time: 8:00-22:00, after 22:00, we will reply to your inquiry during the next working day.
How to pack the products?
The inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation wooden pallet. It can effectively protect products from corrosion during ocean transportation.
Can you send samples?
Of course, we can send samples to all parts of the world, our samples are free, but customers need to bear the courier costs.
What product information do I need to provide?
You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.
What are the shipping ports?
Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can choose other ports according to your needs.
About product prices?
Prices vary from period to period due to cyclical changes in the price of raw materials.
What are the certifications for your products?
We have ISO 9001, SGS, EWC and other certifications.
How long does your delivery time take?
In general, our delivery time is within 30-45 days, and may be delayed if the demand is extremely large or special circumstances occur.
